<template>
  <div>
    <div>
      <el-input style="width: 200px" placeholder="查询标题" v-model="title"></el-input>

      <el-button type="primary" style="margin-left: 10px" @click="load(1)">查询</el-button>
      <el-button type="info" @click="reset">重置</el-button>
    </div>
    <div style="margin: 10px 0">
      <el-button type="primary" plain @click="handleAdd">新增</el-button>
      <el-button type="danger" plain @click="delBatch">批量删除</el-button>

    </div>

    <el-table :data="tableData" stripe :header-cell-style="{backgroundColor:'aliceblue',color:'#333'}"
              @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center"/> <!--实现多选-->
      <el-table-column width="70" prop="id" label="序号" align="center"></el-table-column>
      <el-table-column prop="title" label="标题"></el-table-column>
      <el-table-column prop="description" label="简介"></el-table-column>
      <el-table-column prop="content" label="内容" show-overflow-tooltip>
        <template v-slot="scope">
          <el-button @click="showContent(scope.row.content)" size="mini">显示内容</el-button>
        </template>
      </el-table-column>

      <el-table-column prop="content" label="详情页" >
        <template v-slot="scope">
          <el-button @click="$router.push('/newsDetail?id='+scope.row.id)" size="mini">在详情页展示</el-button>
        </template>
      </el-table-column>

      <el-table-column prop="author" label="发布人"></el-table-column>
      <el-table-column prop="time" label="发布时间"></el-table-column>
      <el-table-column label="操作" align="center" width="180">
        <template v-slot="scope">
          <el-button type="primary" plain size="mini" @click="handleEdit(scope.row)">编辑</el-button>
          <el-button type="danger" plain size="mini" @click="del(scope.row.id)">删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <div style="margin: 10px 0">
      <el-pagination
          @current-change="handleCurrentChange"
          :current-page="pageNum"
          :page-size="pageSize"
          layout="total,prev,pager,next"
          :total="total">
      </el-pagination>
    </div>
    <el-dialog title="新闻信息" :visible.sync="fromVisible" width="60%" @close="closeDialog" :close-on-click-modal="false">

      <el-form :model="form" label-width="80px" style="padding-right:20px" :rules="rules" ref="formRef">

        <el-form-item label="标题" prop="title">
          <el-input v-model="form.title" placeholder="标题"></el-input>
        </el-form-item>

        <el-form-item label="简介" prop="description">
          <el-input v-model="form.description" placeholder="简介"></el-input>
        </el-form-item>

        <el-form-item label="内容" prop="content">
          <div id="editor"></div>
        </el-form-item>

      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="fromVisible = false">取 消</el-button>
        <el-button type="primary" @click="save">确 定</el-button>
      </div>
    </el-dialog>
    <el-dialog title="内容" :visible.sync="fromVisible1" width="60%">
      <div class="w-e-text">
        <div v-html="content"></div>
      </div>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="fromVisible1 = false">确 定</el-button>
      </div>

    </el-dialog>

  </div>
</template>

<script>
import E from "wangeditor"
import hljs from 'highlight.js'

export default {
  name: "News",
  data() {
    return {
      tableData: [], //所有的数据
      pageNum: 1,  //当前的页数
      pageSize: 5,  //每页显示的数据
      username: '',
      title: '',
      total: 0,
      fromVisible: false,
      form: {},
      user: JSON.parse(localStorage.getItem("honey-user") || '{}'),
      rules: {
        title: [
          {required: true, message: "请输入标题", trigger: 'blur'},
        ]
      },
      ids: [],
      editor: null,
      content:'',
      fromVisible1:false
    }
  },
  created() {
    this.load()
  },
  methods: {
    showContent(content){
      this.content=content;
      this.fromVisible1=true

    },
//富文本销毁
    closeDialog() {
      // 销毁编辑器
      this.editor.destroy()
      this.editor = null
    },
    delBatch() {
      if (this.ids.length === 0) {
        this.$message.warning("请选择数据")
        return
      }
      this.$confirm("您确认删除这些数据吗？", "确认删除", {type: "warning"}).then(response => {
        this.$request.delete('/news/delete/batch/', {data: this.ids}).then(res => {
          if (res.code === '200') {
            this.$message.success("操作成功")
            this.load(1)
          } else {
            this.$message.error(res.msg)
          }
        })
      }).catch(() => {
      })

    },
    //当前选中的所有行信息
    handleSelectionChange(rows) {
      this.ids = rows.map(v => v.id)
    },
    del(id) {
      this.$confirm("您确认删除吗？", "确认删除", {type: "warning"}).then(response => {
        this.$request.delete('/news/delete/' + id).then(res => {
          if (res.code === '200') {
            this.$message.success("操作成功")
            this.load(1)
          } else {
            this.$message.error(res.msg)
          }
        })
      }).catch(() => {
      })
    },
    //编辑方法
    handleEdit(row) {
      this.form = JSON.parse(JSON.stringify(row)) //给form对象赋值 要深拷贝数据
      this.fromVisible = true
      this.$nextTick(() => {//渲染div文本之后 再去创建富文本编辑器
        this.editor = new E(`#editor`)
        this.editor.highlight = hljs
        this.editor.config.uploadImgServer = "http://localhost:8081/file/editor/upload"//富文本实现上传图片功能
        //配置参数
        this.editor.config.uploadFileName = 'file'
        this.editor.config.uploadImgHeaders = {
          token: this.user.token
        }
        this.editor.config.uploadImgParams={
          type:"img",
        }

        this.editor.config.uploadVideoServer ="http://localhost:8081/file/editor/upload"//富文本实现上传视频功能
        this.editor.config.uploadVideoName = 'file'

        this.editor.config.uploadVideoHeaders = {
          token: this.user.token
        }
        this.editor.config.uploadVideoParams={
          type:"video",
        }

        this.editor.create()  // 创建
        this.editor.txt.html(row.content)
      })
    },
    //新增数据
    handleAdd() {
      this.form = {}
      this.fromVisible = true
      this.$nextTick(() => {//渲染div文本之后 再去创建富文本编辑器
        this.editor = new E(`#editor`)
        this.editor.highlight = hljs
        //实现富文本图片配置功能
        this.editor.config.uploadImgServer = 'http://localhost:8081/file/editor/upload'
        this.editor.config.uploadFileName = 'file'
        //图片与视频类型的判断
        this.editor.config.uploadImgParams={
          type:"img",
        }
        //富文本图片配置参数
        this.editor.config.uploadImgHeaders = {
          token: this.user.token
        }
        //富文本实现上传视频功能
        this.editor.config.uploadVideoServer ="http://localhost:8081/file/editor/upload"
        this.editor.config.uploadVideoName = 'file'
        //图片与视频类型的判断
        this.editor.config.uploadVideoParams={
          type:"video",
        }
        //富文本视频配置参数
        this.editor.config.uploadVideoHeaders = {
          token: this.user.token
        }
        this.editor.create()  // 创建
      })

    },
    //保存按钮触发逻辑 触发编辑或者新增
    save() {
      this.$refs.formRef.validate((valid) => {
        if (valid) {
          //获取编辑框的内容
          let content = this.editor.txt.html();
          this.form.content = content
          this.$request({
            url: this.form.id ? '/news/update' : '/news/add',
            method: this.form.id ? 'PUT' : 'POST',//判断form表单中是否有id字段 如果有表示put编辑 如果没有 表示post新增
            data: this.form
          }).then(res => {
            if (res.code === '200') {
              this.$message.success("保存成功")
              this.load(1)
              this.fromVisible = false
            } else {
              this.$message.error(res.messages)
            }
          })
        }
      })
    },
    reset() {
      this.title = ''
      this.load()
    },
    load(pageNum) {  // 分页查询
      if (pageNum) this.pageNum = pageNum
      this.$request.get('/news/selectByPage', {
        params: {
          pageNum: this.pageNum,
          pageSize: this.pageSize,
          title: this.title
        }
      }).then(res => {
        this.tableData = res.data.records
        this.total = res.data.total
      })
    },
    handleCurrentChange(pageNum) {
      this.pageNum = pageNum
      this.load(pageNum)
    },
  }
}
</script>

<style scoped>

</style>
